admits to felony charges and agrees to pay the largest single criminal fine in u.s. history. we examine the legal resolution of the gulf coast spill, two years later. >> suarez: science correspondent miles o'brien asks an age old question. why do we sleep? the answer comes from an unlikely underwater source. >> no, you don't need more sleep? you're getting plenty of sleep right? are you getting plenty of sleep? yes. >> brown: china's new leader will head both the communist party and the military. we assess the change at the top in beijing. >> suarez: and we close with the story of volunteers stepping up to help victims of hurricane sandy in the borough of queens in new york. >> there's people who have been without attention for a long time. some with, some without running water. definitely without power. you know, so as time goes, it gets worse. and i'm afraid if we don't like, really get this situation under control. >> brown: that's all ahead on tonight's "newshour." major funding for the pbs newshour has been provided by: ♪ ♪ moving our economy for 160 years. bnsf, the